Reports until 10:54, Tuesday 27 April 2021
H1 TCS (TCS)
camilla.compton@LIGO.ORG - posted 10:54, Tuesday 27 April 2021 - last comment - 11:29, Thursday 24 February 2022(58758)
Update of TCS HWS SLED stock

In the LVEA TCS Cabintets (next to BSC3) we have the following SLEDs:

We may soon replace the ITMX SLED using QSDM-840-5 S/N 11.17.127 (alog#58569) so will plan to order new SLEDs of both type soon.
Is there any reason to keep the old removed SLEDs in storage?
Comments related to this report
camilla.compton@LIGO.ORG - 13:28, Monday 07 June 2021 (59148)
Link

Last week I found another box in the cabinets containing 2 more 790nm SLEDs. In alog 41411 Aidan thinks that S/N .255 may still be okay.

  • QSDM-790-5 S/N 07.14.255 MAYBE GOOD?
  • QSDM-790-5 S/N 07.14.256 OLD
camilla.compton@LIGO.ORG - 08:40, Wednesday 07 July 2021 (59334)
Link

Just received and will place in LVEA TCS cabinet:

  • Superluminescent Diode QSDM-840-5 S/N 03.20.479 - NEW (ICS link)
camilla.compton@LIGO.ORG - 10:01, Wednesday 06 October 2021 (59529)
Link

Below SLEDs have all been used/ now broken and are now being disposed of. 

  • Superluminescent Diode QSDM-790-5 S/N 12.05.21
  • Superluminescent Diode QSDM-840-5 S/N 12.02.44; S/N 12.02.46; S/N 07.14.264; S/N 07.14.265; S/N 07.14.266; 
camilla.compton@LIGO.ORG - 13:34, Monday 11 October 2021 (60208)
Link

Updated in ICS as DEFECT-TCS-7749. 

camilla.compton@LIGO.ORG - 11:29, Thursday 24 February 2022 (61895)
Link

23rd Feb 2022 swapped ITMX QSDM-790-5 S/N 06.18.001 for new S/N 06.18.002, see alog 61892. Comments havce been added to ICS records.